require 'sinatra'
require 'securerandom'
require 'json'

set :storage_directory, './storage/'

# create a room

post '/room' do
  id = SecureRandom.hex(6)
  Dir.mkdir(settings.storage_directory+id)
  content_type 'text/json'
  {id: id}.to_json
end

# get room content

get '/room/:id' do |id|
  if Dir.exist?(settings.storage_directory+id)
    content_type 'text/json'
    Dir.glob(settings.storage_directory+id+'/*').map { |f| File.basename(f)}.to_json
  else
    404
  end
end

# upload a file 

post '/room/:id' do |id|
  unless params[:file] &&
         (tmpfile = params[:file][:tempfile]) &&
         (name = params[:file][:filename])
    403
    return
  end
  FileUtils.cp(tmpfile, settings.storage_directory+id+"/"+name)
  200
end

# remove a room

delete '/room/:id' do |id|
end

# get a file

get '/room/:id/:filename' do |id, filename|
  send_file File.join(settings.storage_directory+id, filename)
end

# remove a file

delete '/room/:id/:filename' do |id, filename|
  FileUtils.rm(settings.storage_directory+id+"/"+filename)
end